Griffith M. P., Grusonia pulchella classification and its impacts on the genus Grusonia: Morphological and molecular evidence, Haseltonia, 2002, 9:86-93
Morphological and molecular evidence for the distinctness of Micropuntia pulchella, discussed in the title as Grusonia pulchella. The study compares growth form, the underground organ, fruit spines and nuclear ITS sequences, and presents a new name combination.
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